Question

Expand and simplify each of the following expressions.
4d (d-5f) + 2f (3d + 78)​

Answer 1

Step-by-step explanation:

$4d \: (d - 5f) + 2f(3d + 78)$

$4d \times d - 4d \times 5f + 2f \times 3d + 2f \times 78$

$4 {d}^{2} - 20df + 6df + 156f$

$4 {d}^{2} - 14df + 156f$

therefore, answer